How to make mouse and keyboard press using java program !!!!

       
import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
 
public class KeyStroke {
 
 public static void main(String[] args) throws AWTException {
 
  Robot robot = new Robot();
 
     robot.delay(3000);
 
     robot.keyPress(KeyEvent.VK_Q);
     // MIDDLE WHEEL CLICK
        robot.mousePress(InputEvent.BUTTON3_DOWN_MASK);
        robot.mouseRelease(InputEvent.BUTTON3_DOWN_MASK);

        // SCROLL THE MOUSE WHEEL
        robot.mouseWheel(-100);
        
     // RIGHT CLICK
        robot.mousePress(InputEvent.BUTTON3_MASK);
        robot.mouseRelease(InputEvent.BUTTON3_MASK);
        
     // LEFT CLICK
        robot.mousePress(InputEvent.BUTTON1_MASK);
        robot.mouseRelease(InputEvent.BUTTON1_MASK);

     // SET THE MOUSE X Y POSITIONq
        robot.mouseMove(300, 550);
 }
}